build: trial version target

builds now app and trail target, lib_gui added, istrail function

src/lib_gui/qt/element/QtLineEdit.cpp

@@ -0,0 +1,12 @@
+#include "qt/element/QtLineEdit.h"
+
+QtLineEdit::QtLineEdit(QWidget* parent)
+	: QLineEdit(parent)
+{
+}
+
+void QtLineEdit::focusInEvent(QFocusEvent* event)
+{
+	emit focus();
+	QLineEdit::focusInEvent(event);
+}